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optical trial set
optical trial set

optical trial set

Datecirca 1910
Inventory NumberWJ0238
ClassificationLenses
Subject
    Maker German
    Cultural Region
      Dimensionscase: 5.3 × 26.4 × 28.8 cm (2 1/16 × 10 3/8 × 11 5/16 in.)
      typical lens diam.: 3.7 cm (1 7/16 in.)
      Material
        DescriptionThe box contains a great assortment of lenses, 77 in all, which are put in pairs into a specially designed spectacle frame. There are also in the box two one-slit gutta-percha optical disks, an empty steel ring, and a perforated steel disk. Three tinted glass slides of varying hues of blue (12 cm x 3 cm) complete the set. The spectacles can hold two different lenses on each side. The lenses are separated in columns marked "concav" and "convex". The numbers associated with the lenses are the common ones used in optometry. The cover is held in place by a simple hook.
        Signedunsigned
        FunctionStudying visual sensations and demonstrating lens accommodation.
        ProvenancePsychology Department, William James Hall, Harvard University.
        14 miscellaneous lenses
        14 miscellaneous lenses
        French
        Date: 1900-1950
        Object number: 2007-1-0345
        Image Not Available for 19 assorted positive lenses
        19 assorted positive lenses
        American
        Date: mid 20th Century
        Object number: 1998-1-0384
        6 spectacle lenses
        6 spectacle lenses
        American
        Date: 1925-1950
        Object number: 2007-1-0309
        7 spherical cylindrical plano-convex lenses
        7 spherical cylindrical plano-convex lenses
        American
        Date: mid 20th Century
        Object number: 1998-1-0384b
        39 oval spectacle lenses
        39 oval spectacle lenses
        American
        Date: 1925-1950
        Object number: 2007-1-0308
        box of lenses
        box of lenses
        American
        Date: 1900-1950
        Object number: 2007-1-0025
        set of 6 lenses
        set of 6 lenses
        Queen & Company
        Date: 1893-1912
        Object number: 1998-1-0464
        assorted achromatic and opthalmic lenses
        assorted achromatic and opthalmic lenses
        American Optical Company
        Date: 1940-1950
        Object number: 1998-1-0521
        case of test lenses
        case of test lenses
        English
        Date: 1840-1860
        Accessories: concave lenses (36); convex lenses (36); trial frame; oval lenses (2); round lenses in frames with holders (4); plush-lined box
        Object number: DW0433
        Image Not Available for Polaroid variable day glasses
        Polaroid variable day glasses
        Polaroid Corporation
        Date: circa 1934
        Object number: 2004-1-0480
        opthalmic lenses
        opthalmic lenses
        Andrew J. Lloyd Company
        Date: circa 1932
        Object number: 2007-1-0448
        Fresnel lenses (9)
        Fresnel lenses (9)
        Edmund Scientific Corporation
        Date: 1970-1985
        Object number: 2004-1-0266